Subversion Repositories theia_gpu

//Data bus for EXE Unit

input wire                              iDataWriteEnable_EXE,

input wire[`DATA_ADDRESS_WIDTH-1:0]     iDataReadAddress1_EXE,

output wire[`DATA_ROW_WIDTH-1:0]        oData1_EXE,

input wire[`DATA_ADDRESS_WIDTH-1:0]     iDataReadAddress2_EXE,

output wire[`DATA_ROW_WIDTH-1:0]        oData2_EXE,

input wire[`DATA_ADDRESS_WIDTH-1:0]     iDataWriteAddress_EXE,

input wire[`DATA_ROW_WIDTH-1:0]         iData_EXE,

//Data bus for IO Unit

input wire                              iDataWriteEnable_IO,

input wire[`DATA_ADDRESS_WIDTH-1:0]     iDataReadAddress1_IO,

output wire[`DATA_ROW_WIDTH-1:0]        oData1_IO,

input wire[`DATA_ADDRESS_WIDTH-1:0]     iDataReadAddress2_IO,

output wire[`DATA_ROW_WIDTH-1:0]        oData2_IO,

input wire[`DATA_ADDRESS_WIDTH-1:0]     iDataWriteAddress_IO,

input wire[`DATA_ROW_WIDTH-1:0]         iData_IO,

//Instruction bus

input wire [`INSTRUCTION_WIDTH-1:0]     iInstruction,

`define RMEM_START_ADDR `DATA_ADDRESS_WIDTH'd64

`define OMEM_START_ADDR `DATA_ADDRESS_WIDTH'd128

wire wDataWriteEnable_RMEM,wDataWriteEnable_SMEM,wDataWriteEnable_IMEM,wDataWriteEnable_OMEM;

wire [`DATA_ADDRESS_WIDTH-1:0] wDataWriteAddress_RMEM,wDataWriteAddress_SMEM;

wire [`DATA_ADDRESS_WIDTH-1:0] wDataReadAddress_RMEM1,wDataReadAddress_RMEM2;

wire [`DATA_ADDRESS_WIDTH-1:0] wDataReadAddress_SMEM1,wDataReadAddress_SMEM2;

wire [`DATA_ROW_WIDTH-1:0] wData_SMEM1,wData_SMEM2,wData_RMEM1,wData_RMEM2,wData_IMEM1,wData_IMEM2;

wire [`DATA_ROW_WIDTH-1:0] wIOData_SMEM1,wIOData_SMEM2,wData_OMEM1,wData_OMEM2;

/*

always @ (posedge Clock)

begin

        if (wDataWriteEnable_OMEM)

        $display("%dns OMEM Writting %h to Addr %d (%h)",

        $time,iData_EXE,iDataWriteAddress_EXE,iDataWriteAddress_EXE);

        //if (iDataReadAddress1_IO >= 130)

        //$display("%dns OMEM Readin %h from %d (%h)",

        //$time,wData_OMEM1,iDataReadAddress1_IO,iDataReadAddress1_IO);

end

*/

assign wDataWriteEnable_OMEM =

(iDataWriteAddress_EXE >= `OMEM_START_ADDR )

?       iDataWriteEnable_EXE : 1'b0;

assign wDataWriteEnable_IMEM =

(iDataWriteAddress_IO <  `SMEM_START_ADDR )

?       iDataWriteEnable_IO :  1'b0;

assign wDataWriteEnable_SMEM  =

(iDataWriteAddress_EXE >= `SMEM_START_ADDR && iDataWriteAddress_EXE < `RMEM_START_ADDR)

?       iDataWriteEnable_EXE : 1'b0;

assign wDataWriteEnable_RMEM  =

(iDataWriteAddress_EXE  >= `RMEM_START_ADDR && iDataWriteAddress_EXE < `OMEM_START_ADDR)

?       iDataWriteEnable_EXE : 1'b0;

assign wDataWriteAddress_RMEM = iDataWriteAddress_EXE;

assign wDataReadAddress_RMEM1 = iDataReadAddress1_EXE;

assign wDataReadAddress_RMEM2 = iDataReadAddress2_EXE;

assign wDataWriteAddress_SMEM = iDataWriteAddress_EXE;

assign wDataReadAddress_SMEM1 = iDataReadAddress1_EXE;

assign wDataReadAddress_SMEM2 = iDataReadAddress2_EXE;

//assign oData1_EXE = ( iDataReadAddress1_EXE < `RMEM_START_ADDR ) ? wData_SMEM1 : wData_RMEM1;

assign oData1_EXE = ( iDataReadAddress1_EXE < `RMEM_START_ADDR ) ?

( ( iDataReadAddress1_EXE < `SMEM_START_ADDR ) ? wData_IMEM1 : wData_SMEM1  )

: wData_RMEM1;

//assign oData2_EXE = ( iDataReadAddress2_EXE < `RMEM_START_ADDR ) ? wData_SMEM2 : wData_RMEM2;

assign oData2_EXE = ( iDataReadAddress2_EXE < `RMEM_START_ADDR ) ?

( ( iDataReadAddress2_EXE < `SMEM_START_ADDR ) ? wData_IMEM2 : wData_SMEM2  )

: wData_RMEM2;

assign oData1_IO = ( iDataReadAddress1_IO < `OMEM_START_ADDR ) ? wIOData_SMEM1 : wData_OMEM1;

assign oData2_IO = ( iDataReadAddress2_IO < `OMEM_START_ADDR ) ? wIOData_SMEM2 : wData_OMEM2;

//assign oData1_IO = wIOData_SMEM1;

//assign oData2_IO = wIOData_SMEM2;

//Output registers written by EXE, Read by IO

RAM_DUAL_READ_PORT  # (`DATA_ROW_WIDTH,`DATA_ADDRESS_WIDTH,512) OMEM

//Input Registers, Written by IO, Read by EXE

RAM_DUAL_READ_PORT  # (`DATA_ROW_WIDTH,`DATA_ADDRESS_WIDTH,42) IMEM

(

        .Clock( Clock ),

        .iWriteEnable( wDataWriteEnable_IMEM ),

        .iReadAddress0( iDataReadAddress1_EXE ),

        .iReadAddress1( iDataReadAddress2_EXE ),

        .iWriteAddress( iDataWriteAddress_IO ),

        .iDataIn( iData_IO ),

        .oDataOut0( wData_IMEM1 ),

        .oDataOut1( wData_IMEM2 )

);

//Swap registers, while IO writes/write values, EXE reads/write values

//the pointers get filped in the next iteration

SWAP_MEM  # (`DATA_ROW_WIDTH,`DATA_ADDRESS_WIDTH,512) SMEM

(

        .Clock( Clock ),

        .iSelect( wFlipSelect ),

        .iWriteEnableA( wDataWriteEnable_SMEM ),

        .iReadAddressA0( wDataReadAddress_SMEM1 ),

        .iReadAddressA1( wDataReadAddress_SMEM2 ),

        .iWriteAddressA( wDataWriteAddress_SMEM ),

        .iDataInA( iData_EXE ),

        .oDataOutA0( wData_SMEM1 ),

        .oDataOutA1( wData_SMEM2 ),

        .iWriteEnableB( iDataWriteEnable_IO ),

        .iReadAddressB0( iDataReadAddress1_IO ),

        .iReadAddressB1( iDataReadAddress2_IO ),

        .iWriteAddressB( iDataWriteAddress_IO ),

        .iDataInB( iData_IO ),

        .oDataOutB0( wIOData_SMEM1 ),

        .oDataOutB1( wIOData_SMEM2 )

);

//General purpose registers, EXE can R/W, IO can not see these sections

//of the memory

RAM_DUAL_READ_PORT  # (`DATA_ROW_WIDTH,`DATA_ADDRESS_WIDTH,256) RMEM

(

        .Clock( Clock ),

        .iWriteEnable( wDataWriteEnable_RMEM ),

        .iReadAddress0( wDataReadAddress_RMEM1 ),

        .iReadAddress1( wDataReadAddress_RMEM2 ),

        .iWriteAddress( wDataWriteAddress_RMEM ),

        .iDataIn( iData_EXE ),

        .oDataOut0( wData_RMEM1 ),

        .oDataOut1( wData_RMEM2 )

);

wire wFlipSelect;

UPCOUNTER_POSEDGE # (1) UPC1

(

.Clock(Clock),

.Reset( Reset ),

.Initial(1'b0),

.Enable(iFlipMemory),

.Q(wFlipSelect)

);